>>149901367
The difference is that version of the joker was just a normal guy who snapped and killed a talk show host. That's evil, but not that evil.
Fans would be perfectly fine with any version of Joker other than Arthur Fleck being tortured and raped for their crimes. We had over a decade of investment in wanting to see DCAU Joker dead for some of what he did before they killed him off in Return Of The Joker.